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Chapter 11: Q. 3 (page 294)

What structure is most important in forming the tetrads?

a. centromere

b. synaptonemal complex

c. chiasma

d. kinetochore

Short Answer

Expert verified

The correct answer is option b

Step by step solution

01

Step 1. Introduction

During Prophase I tetrad formation takes place. Tetrad contains four sister chromatids.

02

Step 1. The explanation for the correct option

Option b is correct because the Tetrad arrangement of chromosomes is mediated by a protein lattice called the synaptonemal complex. It is formed during early prophase I of meiosis I. It helps to bind the chromatin of the homologous chromosomes.

03

Step 3. The explanation for the incorrect options

Option a is incorrect because chromosomes are attached to the synaptonemal complex and by cohesion protein at the centromere. The Synaptonemal complex is most important in the arrangement of tetrads.

Option c is incorrect because tetrads are bound together at the chiasmata. The Synaptonemal complex is most essential in forming the tetrads.

Option d is incorrect because the synaptonemal complex is most important in the arrangement of tetrads.

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Most popular questions from this chapter

Animals and plants both have diploid and haploid cells. How does the animal life cycle differ from the alternation of generations exhibited by plants?

Meiosis usually produces ________ daughter cells.

a. two haploid

b. two diploid

c. four haploid

d. four diploid

Many farmers are worried about the decreasing genetic diversity of plants associated with generations of artificial selection and inbreeding. Why is limiting random sexual reproduction of food crops concerning?

a. Mutations during asexual reproduction decrease plant fitness.

b. Consumers do not trust identical-appearing produce.

c. Larger portions of the plant populations are susceptible to the same diseases.

d. Spores are not viable in an agricultural setting

How do organisms with haploid-dominant life cycles ensure continued genetic diversification in offspring without using a meiotic process to make gametes?

Which statement best describes the genetic content of the two daughter cells in prophase II of meiosis?

a. haploid with one copy of each gene

b. haploid with two copies of each gene

c. diploid with two copies of each gene

d. diploid with four copies of each gene
See all solutions

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